text: /*
  Language: Diff
  Description: Unified and context diff
  Author: Vasily Polovnyov <vast@whiteants.net>
  Website: https://www.gnu.org/software/diffutils/
  Category: common
  */
  
  /** @type LanguageFn */
  export default function(hljs) {
    const regex = hljs.regex;
    return {
      name: 'Diff',
      aliases: ['patch'],
      contains: [
        {
          className: 'meta',
          relevance: 10,
          match: regex.either(
            /^@@ +-\d+,\d+ +\+\d+,\d+ +@@/,
            /^\*\*\* +\d+,\d+ +\*\*\*\*$/,
            /^--- +\d+,\d+ +----$/
          )
        },
        {
          className: 'comment',
          variants: [
            {
              begin: regex.either(
                /Index: /,
                /^index/,
                /={3,}/,
                /^-{3}/,
                /^\*{3} /,
                /^\+{3}/,
                /^diff --git/
              ),
              end: /$/
            },
            {
              match: /^\*{15}$/
            }
          ]
        },
        {
          className: 'addition',
          begin: /^\+/,
          end: /$/
        },
        {
          className: 'deletion',
          begin: /^-/,
          end: /$/
        },
        {
          className: 'addition',
          begin: /^!/,
          end: /$/
        }
      ]
    };
  }
  